Signaling system.



J. G. NO LEN.

SIGNALING SYSTEM. 7 APPLIOATION FILED MAY 4, 19.03.

933,197. Patented Sept;7,1909.

'! BHEET8-SHEET 1.

J. G. NOLEN. SIGNALING SYSTEM.

APPLICATION FILED MAY 4, 1903.

Patented Sept. 7, 1909.

'! SHEETS-SHEET 2.

In, x

J. G. NOLEN. SIGNALING SYSTEM.

APPLICATION FILED MAY 4, 1903.

933,197 Patented Sept. 7. 1909.

7 SHEETS-SHEET 3.

I UI I IE J. a, NOLEN. SIGNALING SYSTEM.

7 APPLICATION FILED MAY 4, 1903. S 933,1 97. Patented Sept, 7, 1909.

7 SHEETS-SHEET 4.

min ss lsiyf S I\ J. G. NOLEN.

v SIGNALING SYSTEM.

APPLICATION FILED MAY 4, 1903.

933 1 97; Patented Sept. 7, 1909.

\g) SHEETS-SHEET 5.

J. G. NOL EN.

SIGNALING SYSTEM.

APPLICATION FILED MAY 4, 1903. 933, 1 97.

'l SHEETS-SHEET 6.

Patented Sept. 7, 1909.

HHIIIIII i "J. G. 'NOLBN.

SIGNALING SYSTEM. Arrpxouron IILEDVMAY 4, 190a.

Patented Sept. 7, 1909.

'l SHEETS-SHEET 7.

JAMES e. Norman,- OF CHICAGO. rnnmors, AssIeNoRoF'oNE or CHICAGO, ILLINOIS.

SIGNALING SYSTEM.

Specification a Letters Patent. Application filed Ma 4. 1903.

Patented: Sept. 7, 1909. Serial No. 155,525.

To all whom it may concern:

Be it known that I, ,JAMns G.- NoLn'N, a citizen of the United States'of America, and resident of, Chicago, Cook county,; Illinois, have invented a certain new and useful Improvement in Signaling Systems, of which,

the following is a specification.

My invention contemplatesanimproved electrical signaling system which can be employed as either a fire or burglar alarm system, and which can also be employed in connection with an automatic fire extinguisher system. As a fire alarm system, it

l in operat-ionaii'dcause the latter totr'ansmit can-be equipped with suitable thermostats, preferably of the character hereinafter described, and the arrangement can be such that the these thermostats will cause a master box or signal transmitting device to transmit a predetermined signal to one or more distant points, andal'so sound a local alarm. In a similar manner, and as a burglar alarm sys tem, it may be equipped with a number of devices which can be associated with the doors and Windows of a house, and one of which, when operated by the opening or closingof awindow, will set the master b0 a signal to one or more points. As a means for supervising an guisher system, the system vcan involve a number of suitable devices adapted, when operated by the opening or closing of the (lIfiGI'O-llt valves in the system of p ping, to"

transmit signals to-one or as in other cases, to sound a local alarm, if such is desired. Thus my improved signal-. ing system can be employed to give either fire or burglar alarms, or to enable a person, such-as a telephone operatoror assistant at a district messenger station, to vma'intain'a supervision over an automatic fire extinguisher system. And for all of thesepurposes, and particularly in, the case of the use of my invention as a arrangement can be such that the master box will transmit a signal of a predetermined character when a thermostat or any of the other similar devices is operated, and will transmita' signal of a different character more laces and whenany of the conductors of the circuit in which the thermostat or otherdevices are ineluded, is broken.

Generally staterhthe object of my inven tion is to provide an improved and. h ghly operation of any oneof a number of" automatic fire extinfire alarm system, the

efficient electrical signaling system of the toregoing character.

A special object isto ment wherebythe master box, although it is allowed .to rundown in ,both cases, will transmit one signal for fire, for example, and another and different signal to indicate a mere break in one of the circuit conductors.

Another object is to provide an'improvedand efiicient arrangement whereby an ordinary telephone line signal may be employed to receive the signal transmitted from my lmproved master box or signal transmitting devlce.

A further object is to provide an improved and 'efiicient arrangement whereby the recorder 'or signal mitted from my improved apparatus.

Another object is to provide an improved form of thermostat adapted more particularly for use in connection with my -improved master box and circuit arrangement. A further object is to providean improved of an ordinary automatic fire extinguisher or sprinkler system, and Wlll0h when oper- -HALF TO- FRANK B. COOK,

provide an arrangereceiving device, usually employed. at a district-messenger stat10n, may be arranged to receive the signals trans -so device which can be associated with the valve ated or aii'ectedv by movement-of the valve,

will cause my improved master box to transmlta slgnal of a predetermmed character.

' Another object is to rovide a simple and efiicient arrangement w tem may be provided I and with circuit connections for enabling any sprinkler head, when operated by heat,

to cause the master-box to transmit one o "more s1gnals.--.

- It is also an object to provide certain deereby the sprinklerheads of an automatic fire extinguisher syswith suitable devices.

tails and features of improvement, tending to increase the ability of a. acter.

general efliciency and service system of this particular chariinvention consists- 1n matters hereinalarm system only. Figs. 3, 4 and '5 illus- To the foregoing and other. useful ends my after set forth and claimed.

trate two. forms of thermostatia? diagram illustrating 'theuse of. my improved;

. system for the sole purpose of supervising and adapted to be associated with the valves of the sprinklersystem. Fig. 11 is a diagram illustrating the use of my improved an automatic fire extinguisher system. Figs.

7, 8, 9, and 10 illustrate different, forms of i circuit breaking devices for usein connection withv the arrangement shown in Fig. 6,

system as a means for giving burglar alarms only. Fig. 12' is a'diagram showing the man ner in which my improved system can be employed for connecting up the different sprinkler heads on an automatic fire extinguisher system, so as to enable each head, when operated by heat, to set the master box in operation. Fig. 13 ,is a .perspective of a device for use in'connection with. the

arrangement shown in Fig. 12, which can be associated with a sprinkler head and connected with the master box in such manner [that the opening of the sprinkler head. will .automatically set the'master box in-oper-.

ation. Fig. let is also a detail. view showing another form of circuit breaking devices for use inconnectionwith the valves of an automatic sprinkler system; 'Figs. 15, 16 and 17, illustrate the construction of my improved master box, which is in the form of an ordinary call box, with certain'additions and features of improvement, and which constitutes thesignalstransmitting device of my improved signaling system. Fig. 18 is a diagram of. the circuit connection of the said master box." Figs. 19 and 20 show other forms of valve and valve operated'signal ever, to maintain thes'aidm'agnet in a nor-.

initiating device.

Referring to Fig. 1, the system involvesa master box 1, which is in the form of an or.-

dinary call box, its internal mechanism in volving clock work held normally in a wound-up condition by the armature of an electromagnet. This master box is connected by line wires 2 and 3 with the battery 4t and the relay 5 at a district messenger station. The usual recorder 6 at this station is connectedv in the normally open circuit of the local battery 7. The'normally closed line circuit extending. between the master box and district messenger station includes the colls of the electromagnet in the master box,

the details of-which latter, together with the clock work in the master box, are hereinafter more fully described. In order, howmally deenergized condition, the current is normally shunted around the coils of this magnet, the shunt'co'nsisting of the circuit conductors 8 extendingin the formof a loop, and including thevarious thermostats and. other circuit-breaking 'devices. As shown in -Fig. '1, this shunt connection ineludes the thermostats 9, the sprinkler heads 10, -thevalves 11, and the doors and win- (lows 12. Eachz ther nostatpas will herein afterjmore fully appear, is provided with -.means for breaking the shunt-circuit, and for simultaneouslyincluding a suitable re 'sistance in said circuit.

are associated with. the sprinkler heads.

The devices which -10, the valves '11, and the doors and windows 12, which are also hereinafter more fully described, arev also each capable of breaking the shunt and simultaneously introducing a suitable resistance into the circuit. In other words, each device'is capable of breaking the. normal path of the current through the shunt and at the'same time pre-.

serving the electrical continuity of the shunt by means of a resistance, So although the normal and comparatively low resistance v a local battery 18'. The current from the battery 4. flows through a line circuit'includ-- ing the shunt conductors Send the various circuit breaking devices included in this shunt. Consequently, the magnet in the master box is maintained in a normally deenergized condition, and as long as it is -maintained in this condition its armature pnevents the operation or a running down of the normally wound-up clock workin the master-box. But as .soon as a thermostat, for example, is operated, the resistance of the-shunt is materially increased and to an extent to throw suflicient 'current' through the magnet coils to energize the magent and thereby release the clockwork. The clock Work when set in motion operates a makeand-break device which is also included in .'the shuntaround the magnet, and which therefor produces a make-and-break action in a linecircuit which includesthe battery 4: and the said shunt. This make-and-break action in the line circuit is converted by the relay 5 into a similar make-and-break action in the local circuit of the recorder 6.v The signal thus electrically transmitted over a circuit includin the shunt 8 is then immediately followed by another signal transmitted over the line circuit from the same box, the circuit for this second signal including a second make-andbreak device in the box, and including also a second and smaller shunt around the magnet, rather than the large shunt 8 in which the thermostats are located. Thus in case of fire, or in case of the opening. of one of the doors or windows,

i signal, In this way, the operator at the disma-ted over a circuit including the shunt 8,- while-1n case of a break in one of the circuit Sis normally prevented from runnin by reason of the armature 23 engaging the v escapement.

or in case of'an attempt 'to open one of the valves in the signal system, there are two distinct signals transmitted from the, master 7 box to the centralstation at which the re-. corder 6, is located, the first signal being transmitted over a closed circuit including the large loop or shunt 8, and the second signal including another and smaller shunt within the box. In caseihowever, of a mere break in one of the circuit conductors of the shunt 8, the mechanism of the master-box is released in the same'mannenbut ,in this case there will only be one signahwhich is a the last of the two successive signals, as the shunt 8 will be open andnot in condition to serve as a part of the circuit for the first trict messenger station can easily distinguish vbet-weenan alarm of fire and a signal for merely-indicatinga break in one of the cir-- v cui't, conductors. In the case-o flfire two; signal's will he received, whereas a break in the circuit conductor will only be'accompanied by one signaL- For convenienceof'desoriptionhowever," the signal for fire maybe re- I garded as a long signahand the one which 4 indicates a break may be regarded as a short -signal (Or .the arrangement can be such that in case 'offire there will only be a signal at a certain predetermined character transconductors another signal of a distinctly different character will 'betransmitted .over a circuit which does not include this shunt 8',

but which does include thesmall shun-t in thebox,

A'- better understanding of the operation of my invention maynow be had 'by-refer- 'ring to Figs. 15,16, 17', and 18,which illust'r'ate thcconstruction and circuits of my improved master box or signal transmitting device. As illustrated, this box comprises a crank 19 for winding 11 the clock work20 within thebox. This c ock work, which involves the-spring 21 on the crank shaft can be of the ordinary and well known construcnew vIt also includes 'theescapement 22, which controls T the running down of the clockwork, after the latter has bcen'wound up, in the well known manner: vThe spring of the clock work" is' normally wound ug but own lower end of the. pendulumportion of the sista'nce is raised sufficiently to cause a diversion of current inslifiicient quantity to energize the said magnet. The crankshaft 25 carries an. arm'QB'ada'pted to engage the two 66 contacts 27- and"2,so as to closertherprevi-zz' gsprin'g controlled locking The electrmnagnet 24 is the one previously described, and'is arranged in position' to attract the armature 23, so as to cause the latter .to release the escape men't when the shunt 8 is broken,'or when its reously described local circuit/of the-alarm 11'. This arm 26 is also adapted to engage the contact 29, so as to close the previously described second or small shunt around the magnet 24-. In this way, the signaling cur .rent or make-and-break action is not compelled to traverse a circuit including the coils of the magnet 24. clock work carries two contact wheels 32 and 33, thefirst being insulated from the shaft, and the second being electrically connected with the shaft, which latter is electrically connected with the frame work of the bell.

through the coils of magnet 24 to the box frame, through the contact-wheel shaft 31 and wheel'33, to brush 34, and thence to the binding. post 36 and back to the other line. Current passing through-this circuit would be sufficient to energize the magnet an to cause its armature'to release the escapement The shaft 31 of the 22. The armature whenv attracted isheld or locked in its depressed lever 37. The spring contact 39, together with the shunt 8, constitute another series connection between the two line wires; the contact wheel 33 are in one normal closed series connection between the line wires, while the contact wheel 32 is in an other normally closed or parallel connection including the shunt '8, but the resistance of condition by the Thus the magnet 24 and this latter connection being normally less than the parallel connection including the magnet, the current from the main battery or centralized source 4 at the central station normally flows through the shunt 8, and not. through the magnet 24. wheels rotate in, the direction indicated by the arrow, when the clock work is released by the energizing of the magnet. It will be so disposed upon the peripheries of the two wheels that the circuit including the wheel33 is immediately opened, and that no makeand-break actlon occurs in this circuit until after a predetermined extentof. make-and- -break,action hasloccurred 1n the circuit including the'wheel 32. Just before vthe clock work runs down, the pin 40 on the arm 26 strikes'the-"upper end'of the locking lever 37, thereby automatical'l releasing the armature 23. This re-locks t e escapement, and the The two contact seen thatthe contacts onthe two wheels are crank-handledl)can then'be revolved for the purpose of winding up'the clock work and putting .the-box in condition to again rephone line. Thus-theoperation of the box is 42 and 13.

spond to the operation .of the thermostat, or

any of the other circuitbreakingdevices in;

the shunt 8.

The shaft 31 canalso be provided with a also accompanied by the transmission of a signal of a predetermined character to the.

switch board operator at the telephone exchange. j

The thermostats can-be of any suitable known approvedcharacter, but arepreferabl of the character shown in Fig.4, and illustrated diagrammatically in Fig. 2.

This latter figure is substantially-the same asFig. 1, except that the shunt 8 is. provided with thermostats only. This preferred form of thermostat involves a suitable casing 46, a .mica-diaphragm L'T, a pair of contacts 48 and t9 connected with a button 5O on'the diaphragm. and normally held together by solder 51, anda resistance coil 52. The mica-diaphragm not only excludes dust and moisture from the contacts and other parts, but-also operates to concentrate the heat in the solder.

mica-diaphragm serves also to. prevent the heat in the solder from being dissipated.

through the metal of the box or casing. When "the solder melts the normal path of the. current is broken, and the resistance of the shunt '8 is raised by reason of the introduetion of the resistance .52 into the clrcuit.

The contact 49 is mounted on a mica spring 49". x Fig. 5 illustrates another form of thermostat. In this case, the solder. 52 nor-' mally' joins twometallic connections 53, the

three-elements being adapted'to be handled as a unit, and to be readily placed in and removed from the springs 54. 1 As in the other case, this thermostat is provided with a resolder joint.

sistance coil 55, which isin parallelwith the The arrangement of thermostats, of. any

' suitable character, in the'shunt 8, and also 1 the circuit arrangement of the master-box,

is more clearly illustrated in Fig. 18. I In this" figure, it will be seen 'that-there are normally two closed parallel "conductin paths between the two line wires, one inclu "ing-the magnet. and the contact wheel 33,

and the other including the shunt 8 and the contact wheel-32. -It.wi1l also be seen that the'arm 26 is in readiness to close the small shunt 30 around the magnet as soonas the wheel 33 has rotated sufliciently to commence makin the necessary make-and-break action in the ins circuit.

a Fig. 6 illustrates the use-of my improved In other words, this signaling system for the sole purpose of supervis ng thevalves of an automatic-fire extinguisher system. In such case, the construction of the master box 1 isthe same as in Figs. 1 and 2, but the shunt 8 is provided "with valve operated circuit breakin devices only. These valve operated circuit reak'mg devices may be of any suitable character, it being essential however, that each one is of .a character to introduce a suitable resistance into the circuit when the normal ath of the circuit isbrokenf As illustrate by Figs.

6, 7,. 9 and 10, these circuit breaking devices which. are associated with the valves 56, may

each consist ofa terminal box 57 mounted on the valve and provided with binding posts 58 to whichthe shunt conductors are connected. Thesev blnding posts are insulated from each other, but are electrically con.-

posts 59, which latter are in-turn insulate from each. other, as far as the structure of the box 1s concerned; but which are elecnected respectively with the twobinding trically united bythe jumperwire 60. This jumper-wire can be associatedwith the valve stem in such manner that it will be broken wvhen an attempt is made to operate the valve. For example, each jumper may be provided with aplug connection such as 1 shown in Fig. 7 consisting'of a covered plu Bladapted to engage a covered jack spring 62. With-this arrangement, and, by leading the umper wire through the hand-wheel of the valve, the jumper will be opened or broken as soon-as any attempt is made to tamper with the valve. The box 57 canbe provided with a pad-lock 63, and the two binding posts 58 can be electrically connected by means of the resistance coil' 64;

The total resistance of the shunt 8 will thereforebe increased as soon as the jumper 60 1s openedorbroken, and the increase in -res1stance Wlll be sufiicle'nt to at leastv momentarily cause the battery, current to pass through the magnet in the master box. The energlzing of this. magnet,'in the manner prevlously described, re in themaster box and results in the transmission of a signal to one or more distant attendants .or operators, and also in the givipg eases the clock work of a-local alarm. As previously explain the transmitted signal is of a predetermined 4 character and .indicates that some one is tampermg with the valves ofa certain sprinkler system.

character shown in Fig.14. .In each case,

the jumper is inclosed so as to rotect it, and

soas to render it impwsible or anyone to short' circuit the jumper, and then mali signal. 'In Fi .'8 the jump'ei'is opened the withdrawa [of the contact65-when thevalvestem-is adjusted downwardly. InFig.

ciousl-y turn the:valve without producingba p 120 If desired,'the valve attachment can be of .the character illustrated in Fig. 8, -'or of the trated an arrangement whereby my rimtomatic fire extinguisher svstein. Withthis.

' the shunt 8, therebycausing the master box Y can be taken advantage of in various -.66, and to thereby normally closed contacts. rangement, the "resistance of 'the'shun't' 8. will increased; as soon as andoor or window its allot-ted circut breaking, the previously described 7 box to be automatically set in operatiomjand 25 '-a locaI'ala-rm.

.ll 1e--s1gnal or signals .ouly indicate the presence of-fire-m a certa n Jinent can be em'ployed'in combination with the sudden upward moveinentof the head .14 the downward movement of the'val've stemoperates to release the insulating pin cause a separation of the springs 67 and 68.

Fig. 'llillustrates the use of my improved system'for the sole purpose of giving burglar alarms. For said purpose, the shunt 8 only includes a number of. door or window, operated circuit breaking. devices. For example, devices consisting of the'tv'vo normallyclosed contacts 69 and 70 may be assoeiatedwith either a door or window .in such manner thatthey will be separated upon anv attempt to open a door or window. Each device also involves aresistance coil .71- arranged in parallel with the two adjacent and With this aris opened. sufiicient-ly to open the contacts'of devices, Andas v arrangement, this increase n res stance will-cause the master to-transmit'the desired signals, and also give In F igs. 12 and 13, however I have illusproved signaling system ,may' be connected directly with thesprinkler headset an auarrangement, the thermostat on each sprinkler' head, wh'enopera'ted by. suflicient heat, not. only opens. thef'sprin'kler head and allows the water to escape from the'piping, but.- also opens the'normal path of 'thecurrent in to transmit the desired signal; or signals. thus transmitted not building, but also indicate tliata sprinkler system in the building is in operation. at least so far as the opening-of, the sprinklerheads is concerned. Any suitable arrangethe sprinkler heads. For .exainplma pain of normally closed spring contacts 72hand 73 can be'mounted on the piping adjacent the sprinkler head 74, andtin such position that the operation of the sprinkler head will cause the disarrangement of'the two springs,

causingthe insulation ,75 to become interposed between the two springs. The s1 1d-' denjbreaking of the n'manal path of the cm"- rent in the shunt in this ivayjoperates to introduce the resistance coil ffiinto, the circuit, and to thereby'increase the total resistance of-thc shunt, in the mannenpreviously de scribed. Itis obvious, ,however,- ,that lthe siuldenihlowing-ofl of the sprinkler head ways for the purpose of opening or breaking the normal flth if-the current; 3

In Fig. 1 have shown the shunt equipped l with all of the difierent'kinds of circuit breakim devices, and in such case the signal will be given whenever a thermostat is operated by fire, whenever a valve is tampered with, whenever a door or window is attempted to be opened by burglars at night, or at any other time when the occupants are not in the building, and also whenever a sprinkler head bursts or responds to the heat of a fire. Thus in anycase of this character, the abnormal condition or the attempt to. produce an abnormal condition will -,be"ac companied by the transmission of a signal to an attendant or operator at a distant station. Thisv attendant or operator. will know instantly' that something is wrong in thejhouse at which a certain master-box is located, and

will at once notify the proper parties. Butin thecase of amere break in'onev of the ircuitv conductors, the signal, as previously cescribed, will be of such character as to enable the attendant. dist-inguishit from a fire or other alarm, and to act'accordingly.: q With the arrangement shown. in Fig. 2, .for example, the operator or attendant will of course understandthat a certain predetermined signal will indicate the presence of fire in the building where'a certain master box is located. {In other words, the long or extended si na1, in this. case will always indicate fire, w iereas a similar signal in the arrangement shown in Fig.1 will be-of a more general na'ture'and will sim 1y indicate that there] is trouble of some kin thing is wrong at'a'certain building. So also-in Figs. 6, "11 and 12 the relatively long or extended signal will be of a specific character,- in one case indicating. a malicious tampering with-the fitinguisher system, in another an attempt on the part of burglars to enter a house, and in the last the bursting of one or more sprinkler heads in a'certain automatic fire extinguisher systeniQ .But in each and ever 110 case it will be seen that the signal WlllCl must be; responded to uickly, such as an alarm of fire, is prilnarily transmitted over a circuit-including the device which initiated the signaling, and is then completed 115 over a-circnit which does not include. this device, In other words, the first part of the signal is transmitted over a circuit which includcs the shunt or normal path of the cur-- rent, and is then completed over a parallel 120 circuit. Both circuits howeve1",.as will be .observed,include the line wires and the common battery or centralized source of current at the central station. And in any event, a'

mere break in anyof the circuit conductors 125 of the shunt produces-a signal which is of a. predetermined 1 character, and which so differentfrom the only otherkind of signal which the apparatus is capable of trans mitting that it or operator to easily and that some- 100.

valves of a cert-am fire will be instantly recognized,

I new "7 coil, and whereby the clock work is released but no signal transmitted by said make-andbreak device upon a break or rupture in the parallel branch containing the said signal initiating device. I I

' 3. In an electrical signaling system,v the combination of a signal receiving device, a signal initiating device having normally closed contacts connected in parallel with a 1!) suitable resistance, and signal transmitting mechanism involving normally wound-up clock work and two make-and-break devices, an electromagnetic, device for releasing said clockwork, a suitable source of current, and l'fi-suitable connections for. including the said source of current in a normally closed circuit with the two make-and-break devices and electromagnetic releasing device and the sign'al initiating device, one r'nake-and-break device and the electromagnetic releasing device being connected in parallel with the said signal initiating device and the other makeand-break device, and the resistance of said electromagnetic device. being higher than that of said signal initiating device, whereby two successive make-and-brea'k' actions are produced by the two make-and-break d'e-' 4. Inan electrical signaling' system, the

combination of a signal receiving'device and a source of current atone station, and signaling transmitting mechanism and a signal initiating device at another station, said signal transmit-ting mechanism involving 4 0 normaflly wound up clock work and a makea-nd-lireak device, an electromagnet-provided With an armature adapted to release said clock-work, a normally closed line circuit extending between two stations and in which t'tr'e-eleetrbmagnet, the make-and break device, the source of current and thesignal reeeiving' device are connected in series, a shim-t inclnt'llngsaid signal initiating device and eit'tendingaronnd said inagi'let, a lock for maintaining said armature in its attracted position until 'the clock \vork runs down, a second and normally open shunt extending around said magnet, and a switch operated by the clock work and adapted to close said last l-nention'ed shunt.

In an electrical signaling system, the

combination of signal; receiving mechanism anda source of current at a central station, signal transmlttrngflmeclranism and a pin- 0 rality of signal i tiating devices at asubstation, said signal transmitting mechanism involving normally wound ip clock work" and a: pair of rotary make-and break d e- \r1ces. an electromagn-et provided with an varnrati i're adapted'when ope'ra'tte'd to release the clock work, a lock for automatically e11 gaging and holding said armature in its attracted position until the clock work runs down, a normally open shunt around the magnet adapted to be closed by the clock-,70 work. suitable circuit connections for including the coils of said magnet and one of said inake-andbreak devices in a normally closed line circuit including the source of current and signal receiving mechanism at the cen- 7'5 tral station, a restoring deviceoperated by the clock work and adapted for engaging said lock for the purpose of releasing and restoring said armature to its normal condition when the clock work runs down, and 8-0 suitable circuit connections for including said signal initiating device and the other make-and-break device in a normally closed shunt or parallel connection extending around 'themagnetand said first mentioned ln ake-and-break device, each signal initiating device being adapted to opena' normal path of the. currentand provided with means, for maintaining'the electrical continuity of the normally closed shunt after the normal no path of the currenthas been opened, whereby the operation of any one of said signal initi-' ating devices causes the said magnet. to release the clock work and thereby set the two make-and-ln'cak devices in operation, the v make-and-break device in the normally closed shunt being adapted to first transmita signal I over a line circuit inclu'dingsaid normally closed shunt, the other niake-and-break device being adapted totransmit a continuation of this signal over a line circuit including the said normally open shunt, and whereby a break or rupture in any of the circuit conductors of the normally closed shunt is accompanied by a release of saidclock work and by a transmission of a signal through the normally open shunt only.

6. In van electrical signaling system, the combination of sigi'ial' receiving mechanism and a suitablesource ot'current at thecen- 'tr'alstation, signal transmit-ting mechanism and an ai'itoni'atic fire extinguisher system located at a sub-station, saidsignal transmuttlng IIIBChanlSIILlIlVOlVIDg normally wound up clock-work and asuitable'make-and- 115.

break device, an electromagnetic device for releasing said clock work, line conductors and suitable connections for connecting the coils of said electromagnetic device and said source of current in a normally closed line i20' circuit, a valve for said automatic fire extinguisher system, a signal initiating deviceassociated with said valve and adapted to be operated thereby, and a normally closed shun-t extending around said electromagnetic device, said shunt including said make-andb'reak device and said signal initiating device, whereby the operation of said signal initiating device is accompanied by a release of said clock work and the transmis- 1-39 sion'ofv a" signal through a line circuit ineluding said shunt, and whereby a break or. rupture in any of-thecircuit conductors of said shunt is accompanied by a release of said clock work but not of thetransmission of a signal'through said shunt. p 7. In an electrical signaling system, the

combination ef-signal receiving mechanism and a source of current at acentral station,

signal transmitting mechanism and an automatic fire extinguisher system at a substation, a. valve] for said fire extinguisher system, the signal transmitting mechanism including normally wound .up clock work and a' pair of make and-break'devices, an

'electromagnet and means operated thereby v for releasing the clock work,-'asignal initiating device associated with-said valvefand '1 adapted to beoperated thereby, said signal initiating device being adapted to open a normal path of 'the current. and provided with means for maintaining its electrical sion of a signalover a circuit including said continuity after the normal pathhas been opened,"sui ta'ble line circuits and connec-. tionszfor connecting said magnet and one of said make-and-break devices in series ina line circuit including the source of current, and a normally. closed shunt "extendingaround said magnet and including said sig-.

nal initiating device, whereby movements 'of thesaid valve are accompanied by the release or. said clock work and the transmisshunt, and whereby a break or rupture in the wiring oi saidshunt is accompanied by a release of said clock work and of the transmission of a signal ,over a suitable line circuit.

8 In an electrical signaling"systenuthe combination of signal receiving mechanism and a source of current located at a central station, and-signal transmitting mechanism having a plurality of make and break devices and an automatic fire extinguisher system located'at a sub-statiomsprinkler heads ,for said fire extinguisher system, an elcctro magnet for setting the signal transmitting IHGCllflIllSID' inoperation, l ne conductors and suitable connections for including a transmitter make and break device, the said magnet and source of current in a normally closed line circuit, signal initiating devices associated with said sprinkler heads, and a normally closed shunt extending around said magnet and includinganothertransinitter make and break device and said sigmil initiating devices, each signal initiating device being adapted when operated-by a sprinkler head to open the normal path of the current, so as tocause suflicient current v to flow ,throughthe magnet and release the signal transmitting mechanism, "and each signal initiating device being provided-with meansv for maintaining-the electrical con;

tinuity of the shunt after the opening of d on ,said diaphragm transmitting device in 0peration, a source 0 the normal path of the current, whereby the bursting of a sprinkler head is accompanied by the transmission of a signal over a circuit inclu ing said shunt, and the transmissionof a signal over the main line.

9.111 an electrical signaling system, the combination of signal receiving mechanism and a source of current at a central-station, signal transmitting. mechanism at, a sub-station, said signal transmitting mechanism involving normally wound-up clock QVOlk and a plurality, of make-and-break devices, an electro'magnet and means operated thereby for releasing the clock work, circuit connections'for including said magnet, a transmitter make and break'device and source of current in a normally closed line circuit,

signal initiating devices associated with doors or windows of said sub-stationand also with valves located at said substation,-

and a shunt extending around said magnet and including another transmitter make-and breakdev ce and said signal initiating devices, each signal initiating device being combination of signal receiving mechanism and a source of current at one station, signal transmitting mechanism at another station, said signal-transmitting mechanism involving normally wound-up clock work and a inake-and-brea-k device, an electromagnet for releasing the clock; work, a number of ther-' mostats and valve operated devices for initiating signals, a normally closed shunt extending around said magnet and including said make-and-break device and signal initiating devices, andsuitable lineconductors and connections for including the source of current aiid the said magnet in a normally closed line circuit, each thermostat consisting of a suitable box inclosing contacts held together by fusible .material, a mica-diaphragm for excluding dust and dirt from said box, and an exposed metal button mountand connected with said contacts.

11. In an electrical signaling system, the" combination of a signal receiving device, a

signal transmitting device connected with the said signal receiving device, an electromagnetic device adapted for settingthe signal current,- ashunt extending around the said electromagnetic device, and a signal initiating device in said pshunt, said signal initiating device being adapted when operated to open the normal path of the current flowing in the shunt, and adapted also to maintain the electrical continuity of the shunt after the normal path of the currenthas been broken, the said signal transmitting device being adapted 1 when set in operation to transmit a signal over a circuit including said shunt, the transmitter, the source ,of current and the signal receiving device.

12. In a signal system,'a signal receiving device, a line circuit therefor including a make and break device, a supervisory shunt circuit in parallel to the-make and break de-- eratively affected by changes of condition 1n the shunt circuit caused by the operation of si nal initiating devices, andia single source of current for the electromagnetic controlling means, the'line, and the supervisory circuit.

- 13. In a signal system, a signal receiver, a

break devices and electrores onsive motor controlling means arranged or control bycircuit.- '14. In a signal system, amain circuit from a central oflice to an area to be supervised, a supervisory shunt in said area, sig-' naling make and break devices in each of said main and shunt circuits, and means' controlled by the condition of the supervisory shunt for actuating the .make and break devices.

Signed by me at Chicago, Cook county, Illinois, this 1st day of May, 1903. v

- JAMES G, NOLEN.

Witnesses:

' CHARLES W. HICKOK, v

WM. A.-Ha mmns. 4

the signal initiating devices in the shuntv 

